package com.apartment.web.admin.service.impl;


import com.apartment.common.minio.MinioProperties;
import com.apartment.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioClient minioClient;
    @Autowired
    private MinioProperties minioProperties;

    @Transactional
    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {

        boolean b;

                b = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
                if (!b){
                    minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
                    minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(createBucketPolicyConfig(minioProperties.getBucketName())).build());

                }
                String fileName = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
                minioClient.putObject(PutObjectArgs.builder().bucket(minioProperties.getBucketName()).object(fileName).stream(file.getInputStream(),file.getSize(),-1).build());
                String url = minioProperties.getEndpoint() + "/" + minioProperties.getBucketName() +"/"+ fileName;
                return url;


    }

    private String createBucketPolicyConfig(String bucketName){
        return """
                {
                    "Statement" : [ { 
                        "Action" : "s3:GetObject",
                        "Effect" : "Allow",
                        "Principal" : "*",
                        "Resource" : "arn:aws:s3:::%s/*"
                    } ],
                    "Version" : "2012-10-17"                    
                }
                """.formatted(bucketName);
    }

}
